Set-top box



FIG. 1 is a perspective view of the set-top box of our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 a side view of one side thereof;

FIG. 5 is a side view of the second side thereof;

FIG. 6 is a top plan view of the second side thereof; and,

FIG. 7 is a bottom plan view thereof.

The ornamental design for a set-top box, as shown and described.